Supplemental Oil and Gas Disclosures (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Supplemental Oil and Gas Disclosures (Unaudited)

Schedule of costs incurred in oil and natural gas property acquisition, exploration and development activities

        The following table sets forth costs incurred related to the Company's oil and natural gas activities for the Successor Period, Predecessor Period and years ended December 31, 2015 and 2014 (in thousands):

	Successor		Predecessor
	For the Period October 21, 2016 through December 31, 2016		For the Period January 1, 2016 through October 20, 2016		For the Year Ended December 31,
					2015		2014
Acquisition costs:
Proved properties	$	—	$	—	$	—	$	—
Unproved properties		1,430		6,869		8,448		25,576
Exploration costs		—		—		—		672
Development costs		17,708		121,668		274,978		525,941
Total costs incurred	$	19,138	$	128,537	$	283,426	$	552,189

Schedule of net capitalized costs

        The following table sets forth the capitalized costs related to the Company's oil and natural gas producing activities as of December 31, 2016 and 2015 (in thousands):

	Successor			Predecessor
	December 31, 2016			December 31, 2015
Proved properties	$	573,150		$	3,666,403
Unproved properties not being amortized		65,080			—
Gross capitalized costs		638,230			3,666,403
Less: Accumulated depreciation, depletion, amortization and impairment		(12,587	)		(3,148,240	)
Net capitalized costs	$	625,643		$	518,163

Schedule of estimated quantities of proved oil and natural gas reserves

	Oil (MBbl)			NGL (MBbl)			Gas (MMcf)			Total (MBoe)
2014 (Predecessor)
Proved Reserves
Beginning Balance		54,899			26,156			280,198			127,755
Revision of previous estimates		(11,563	)		(4,444	)		(41,510	)		(22,925	)
Extensions, discoveries and other additions		30,232			15,414			188,336			77,035
Sales of reserves in place		(10,182	)		(2,181	)		(24,166	)		(16,391	)
Purchases of reserves in place		—			—			—			—
Production		(5,144	)		(2,417	)		(25,013	)		(11,730	)
Net proved reserves at December 31, 2014		58,242			32,528			377,845			153,744
Proved developed reserves, December 31, 2014		27,181			16,443			179,972			73,620
Proved undeveloped reserves, December 31, 2014		31,061			16,085			197,873			80,124
2015 (Predecessor)
Proved Reserves
Beginning Balance		58,242			32,528			377,845			153,744
Revision of previous estimates		(30,490	)		(15,495	)		(178,287	)		(75,700	)
Extensions, discoveries and other additions		2,189			1,371			17,026			6,398
Sales of reserves in place		(2,871	)		(843	)		(7,834	)		(5,019	)
Purchases of reserves in place		2,437			1,157			15,145			6,118
Production		(4,794	)		(2,473	)		(28,403	)		(12,001	)
Net proved reserves at December 31, 2015		24,713			16,245			195,492			73,540
Proved developed reserves, December 31, 2015		23,006			15,376			184,365			69,110
Proved undeveloped reserves, December 31, 2015		1,707			869			11,127			4,430
2016 (Predecessor)
Proved Reserves
Beginning Balance		24,713			16,245			195,492			73,540
Revision of previous estimates		(3,089	)		(459	)		(946	)		(3,706	)
Extensions, discoveries and other additions		1,566			840			11,052			4,249
Sales of reserves in place		—			—			—			—
Purchases of reserves in place		—			—			—			—
Production		(2,964	)		(1,932	)		(23,215	)		(8,765	)
Net proved reserves at October 20, 2016		20,226			14,694			182,383			65,318
Proved developed reserves, October 20, 2016		20,226			14,694			182,383			65,318
Proved undeveloped reserves, October 20, 2016		—			—			—			—
2016 (Successor)
Proved Reserves
Beginning Balance		20,226			14,694			182,383			65,318
Revision of previous estimates		19,137			11,421			147,688			55,172
Extensions, discoveries and other additions		22,571			11,186			147,236			58,296
Sales of reserves in place		—			—			—			—
Purchases of reserves in place		—			—			—			—
Production		(544	)		(429	)		(4,948	)		(1,798	)
Net proved reserves at December 31, 2016		61,390			36,872			472,359			176,988
Proved developed reserves, December 31, 2016		19,698			16,349			201,454			69,622
Proved undeveloped reserves, December 31, 2016		41,692			20,523			270,905			107,366

Schedule of benchmark prices used to determine estimated proved reserves

	Successor		Predecessor
			At December 31,
	At December 31, 2016
			2015		2014
Oil and Natural Gas Prices:
Oil (per barrel)	$	42.75	$	50.28	$	94.99
NGL (per barrel)	$	15.29	$	17.44	$	39.17
Natural gas (per million British thermal units)	$	2.48	$	2.59	$	4.35

Schedule of standardized measure of discounted future net cash flows

        The following table sets forth the standardized measure of discounted future net cash flows from projected production of the Company's oil and natural gas reserves at December 31, 2016, 2015, and 2014 (in thousands):

	Successor			Predecessor
				Year Ended December 31,
	At December 31, 2016
				2015			2014
Future cash inflows	$	4,186,389		$	1,902,184		$	8,405,916
Future production costs		(2,078,640	)		(1,024,314	)		(2,669,000	)
Future development costs		(692,533	)		(47,532	)		(751,353	)
Future income tax expense		(106,563	)		—			(1,113,908	)
Future net cash flows		1,308,653			830,338			3,871,655
10% annual discount for estimated timing of cash flows		(778,703	)		(317,519	)		(1,998,294	)
Standardized measure of discounted future net cash flows	$	529,950		$	512,819		$	1,873,361

Schedule of changes in standardized measure of discounted future net cash flows

        The following table sets forth the changes in the standardized measure of discounted future net cash flows applicable to proved oil and natural gas reserves for the Successor Period, Predecessor Period and the years ended December 31, 2015 and 2014 (in thousands):

	Successor			Predecessor
	For the Period October 21, 2016 through December 31, 2016			For the Period January 1, 2016 through October 20, 2016			Year Ended December 31,
							2015			2014
Standardized measure, beginning of period	$	349,905		$	512,819		$	1,873,361		$	1,790,446
Net changes in prices and production costs		78,103			(113,313	)		(960,245	)		(190,256	)
Net changes in future development costs		2,022			175			57,357			66,828
Sales of oil and natural gas, net		(27,292	)		(116,043	)		(232,630	)		(536,362	)
Extensions		102,087			29,871			38,550			1,094,606
Discoveries		—			—			—			—
Purchases of reserves in place		—			—			34,369			—
Divestiture of reserves		—			—			(77,445	)		(390,264	)
Revisions of previous quantity estimates		102,623			(22,194	)		(1,174,997	)		(205,233	)
Previously estimated development costs incurred		—			29,975			198,564			160,663
Accretion of discount		5,832			42,735			238,639			206,783
Net change in income taxes		(48,206	)		—			513,024			(230,401	)
Changes in timing, other		(35,124	)		(14,120	)		4,272			106,551
Standardized measure, end of period	$	529,950		$	349,905		$	512,819		$	1,873,361